Fire Resistance of Concrete‐Filled, Fire‐Resistant Steel‐Tube Columns
Fire Resistance of Concrete‐Filled, Fire‐Resistant Steel‐Tube Columns
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DOI：
10.1061/(asce)0899-1561(1994)6:2(169
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发表时间：
1994-05
影响因子：
3.2
通讯作者：
Y. Sakumoto;Tadayoshi Okada;Masatomo Yoshida;S. Tasaka
中科院分区：
文献类型：
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作者：
Y. Sakumoto;Tadayoshi Okada;Masatomo Yoshida;S. Tasaka
本文介绍了用于建筑结构的耐火（FR）钢填充钢管混凝土（CFST）柱的全尺寸加载火灾试验结果。钢管混凝土柱通过在钢管表面覆盖具有较低保温性能的保护层，可以有效地利用内部混凝土的热容量，实现优越的耐火性能，并且可以通过将钢温度保持在600℃以下来抵抗偏心加载引起的弯矩，而无需内部钢筋。在日本，钢筋很难布置，因为在梁柱连接处设置了内隔板以防止地震。本文还对普通钢结构钢管混凝土柱进行了加载防火试验。采用氢氧化铝碳酸钙水泥型保护（陶瓷保护）和发泡型膨胀涂层作为保护材料。在综合建筑研究中心的加热炉上进行了带负荷的燃烧试验。
This paper presents experimental results of full‐scale fire tests with loading on concrete‐filled steel‐tube (CFST) columns using fire‐resistant (FR) steel for building structural use. By covering the tube surface with protection having lower insulation properties, CFST columns will achieve a superior fire resistance, taking advantage of the heat capacity of inner concrete effectively, and they could resist the bending moments caused by eccentric loading without inner reinforcing bars by keeping steel temperature below 600°C. Reinforcing bars are difficult to arrange because inner diaphragms are provided at the beam‐column connections against earthquakes in Japan. Fire tests with loading of CFST columns using ordinary steel were also performed for comparison. Aluminum hydroxide calcium carbonate cement‐type protection (ceramic protection) and foaming‐type intumescent coating were used for the protection material. The fire tests with loading were carried out at the furnace in the General Building Research ...